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2015-07-07sim: Refactor the serialization base classAndreas Sandberg
Objects that are can be serialized are supposed to inherit from the Serializable class. This class is meant to provide a unified API for such objects. However, so far it has mainly been used by SimObjects due to some fundamental design limitations. This changeset redesigns to the serialization interface to make it more generic and hide the underlying checkpoint storage. Specifically: * Add a set of APIs to serialize into a subsection of the current object. Previously, objects that needed this functionality would use ad-hoc solutions using nameOut() and section name generation. In the new world, an object that implements the interface has the methods serializeSection() and unserializeSection() that serialize into a named /subsection/ of the current object. Calling serialize() serializes an object into the current section. * Move the name() method from Serializable to SimObject as it is no longer needed for serialization. The fully qualified section name is generated by the main serialization code on the fly as objects serialize sub-objects. * Add a scoped ScopedCheckpointSection helper class. Some objects need to serialize data structures, that are not deriving from Serializable, into subsections. Previously, this was done using nameOut() and manual section name generation. To simplify this, this changeset introduces a ScopedCheckpointSection() helper class. When this class is instantiated, it adds a new /subsection/ and subsequent serialization calls during the lifetime of this helper class happen inside this section (or a subsection in case of nested sections). * The serialize() call is now const which prevents accidental state manipulation during serialization. Objects that rely on modifying state can use the serializeOld() call instead. The default implementation simply calls serialize(). Note: The old-style calls need to be explicitly called using the serializeOld()/serializeSectionOld() style APIs. These are used by default when serializing SimObjects. * Both the input and output checkpoints now use their own named types. This hides underlying checkpoint implementation from objects that need checkpointing and makes it easier to change the underlying checkpoint storage code.
2015-03-02dev, arm: Clean up PL011 and rewrite interrupt handlingAndreas Sandberg
The ARM PL011 UART model didn't clear and raise interrupts correctly. This changeset rewrites the whole interrupt handling and makes it both simpler and fixes several cases where the correct interrupts weren't raised or cleared. Additionally, it cleans up many other aspects of the code.
2014-12-02mem: Remove redundant Packet::allocate callsAndreas Hansson
This patch cleans up the packet memory allocation confusion. The data is always allocated at the requesting side, when a packet is created (or copied), and there is never a need for any device to allocate any space if it is merely responding to a paket. This behaviour is in line with how SystemC and TLM works as well, thus increasing interoperability, and matching established conventions. The redundant calls to Packet::allocate are removed, and the checks in the function are tightened up to make sure data is only ever allocated once. There are still some oddities in the packet copy constructor where we copy the data pointer if it is static (without ownership), and allocate new space if the data is dynamic (with ownership). The latter is being worked on further in a follow-on patch.
2013-10-17dev: Allow additional UART interrupts to be setAli Saidi
This patch allows setting a few additional interrupts for status changes that should never occur.
2013-07-11dev: make BasicPioDevice take size in constructorSteve Reinhardt
Instead of relying on derived classes explicitly assigning to the BasicPioDevice pioSize field, require them to pass a size value in to the constructor. Committed by: Nilay Vaish <nilay@cs.wisc.edu>
2013-07-11dev/arm: get rid of AmbaDev namespaceSteve Reinhardt
It was confusing having an AmbaDev namespace along with an AmbaDevice class. The namespace stuff is now moved in to a new base AmbaDevice class, which is a mixin for classes AmbaPioDevice (the former AmbaDevice) and AmbaDmaDevice to provide the readId function as an inherited member function. Committed by: Nilay Vaish <nilay@cs.wisc.edu>
2012-10-25arm: Create a GIC base class and make the PL390 derive from itAndreas Sandberg
This patch moves the GIC interface to a separate base class and makes all interrupt devices use that base class instead of a pointer to the PL390 implementation. This allows us to have multiple GIC implementations. Future implementations will allow in-kernel GIC implementations when using hardware virtualization. --HG-- rename : src/dev/arm/gic.cc => src/dev/arm/gic_pl390.cc rename : src/dev/arm/gic.hh => src/dev/arm/gic_pl390.hh
2012-05-10ARM: pl011 raw interrupt fixChander Sudanthi
Raw interrupt was not being set when interrupt was disabled. This patch sets the raw interrupt regardless of the mask.
2011-04-20fix some build problems from prior changesetsNathan Binkert
2011-01-07Replace curTick global variable with accessor functions.Steve Reinhardt
This step makes it easy to replace the accessor functions (which still access a global variable) with ones that access per-thread curTick values.
2010-11-08ARM: Add checkpointing supportAli Saidi
2010-08-23ARM: Change how the AMBA device ID checking is done to make it more genericAli Saidi
2010-08-23ARM: Add I/O devices for booting linuxAli Saidi
--HG-- rename : src/dev/arm/Versatile.py => src/dev/arm/RealView.py rename : src/dev/arm/versatile.cc => src/dev/arm/realview.cc rename : src/dev/arm/versatile.hh => src/dev/arm/realview.hh